Deep-well pump.



E. A. HARDISQN, R. W. GUNN & W. A. S. THOMPSON.

DEEP WELL PUMP.

AIVPLIOATION FILED MAY 25, 1908.

Patented July 6, 1909.y

k N 1w r a 4 M@ o 7/ e 1 a s 6 s, 5/ M i 8J eff/5 J. wf. L 7 ,w JN., lf.. fm... .5 ..VNnnM 1 UNITED sTATEs PATENT oEEIcE.

EDWIN A. HARDISON, OF KER N, AND ROBERT W. GUNN AND llVILLSIE A. S. THOMPSON, OF

LOS ANGELES, CALIFORNIA.

DEEP-WELL PUMP.

To all whom it may concern:

Be it known that we, EDWIN A. HAEDrsoN, ROBERT W. GUNN, and WIIZLsrE A. S. THOMPSON, all citizens of the United States, and residentsv of the State of California, the former residing at Kern, in the county of Kern, and the two latter residing at Los Angeles, inthe county of Los Angeles, in said State, have invented new and useful Improvements in Deep-Well Pumps, of which the following is a specification.

An object of this invention is to provide simple, convenient and eifective means certain in action, whereby thepump may be readily inserted' into the pump tubing 'and will become automaticallyV locked in the pum -seatand thus be permanently secured in said tubing; and which will then hold thev n pump so locked as to allow the pump to be operated-in the usual manner, andyet to allow the pum to be withdrawn whenever desired and to e repeatedly inserted, llocked and withdrawn. l 1

An object of the invention is to provide' simple and satisfactory means for holding the standing-valve seated during theoperation of the pump without the use of leather or other packing. It is to be understood, however, that any form of packing may be employed without avoiding the invention in its main features.

The invention may be embodied in various forms.

The accom anying drawings illustrate the invention in t e form at present deemed most desirable. -r 4 Y Figure 1 is a broken view partly in section, showingapump embodyingthis invention in osition in a well-casing, aportion of whic 1s shown. The plun er is shown at the lower art of its stroke. ig. 2 is an enlarged bro en axial section of parts shown in Fig. 1. The standing-valve and the expander and frictional retainer are shown intact. The plunger is shown drawn up into v position where' a further upward movement thereof will start the standing-valve and the attached parts from their seat. Fig. 3 is a broken axial section showing parts in posi"- tion just before seating and anchoring the working-barrel. The fin ers of the retainer are retracted and held 1n place by the retainer-ring in the position they occupy be.

fore insertion into the tubing. The retaining-ring rests 'on the shoulders provided to Specification of Letters Patent.

Application filed May 25, 1908.

`PatentedJuIy 6, 1909.

Serial. N0. 434,990.

hold the same, while a. further downward movement of the working-barrel andits attached and contained parts may be eifected to bring the parts into the osition shown in Figs. 1 and 2. Fig. 4 is a roken axial section showing the parts in position they are in 'before the working-barrel and its attached and at the bottom of Fig. 5.

y1 designates the well-casing 2, the pumptubing; 3, the downward continuation ofthe tubing below the ump-seat; 4, the pumpplunger; 5, the wor iin -valve of said plunger; 6, the sucker-rod; 7, t estanding-valve, and 8 the Garbutt attachment for the standingvalve; all of which parts may be of the usual construction- 9 'is the working-barrel provided with the working-barrel-coupling 10 which connects the working-barrel proper 9 with the pumpbase 11 which base also forms the seat for a standing-valve-sleeve 12 and serves for attachment ofthe retainer 13.

.14 is a seat for the pump-base 11, the same being permanently connected in the line of tubing 2,` 3, by a coupling 15. Said pumpbase seat 14is screw-threaded at top and bottom for connection with the couplings 15 and 16 between the tubing 1 and the downward extension 3 thereof.

In the form shown, the upper end ofthe pump-base 11 is externally screw-threaded plurality'of flexible lingers 18, each provided with a projecting knob 19 having slanting lower and `up er faces 20 and 21, the former to allow the Fingers to readily pass into and through the seat member 14, and the latter to engage the lower end of said member as hereinafter qxplained. The seatY member 14' is provided at-the top-(with` a `downwardlytapering seat 22 for the pump-base, and at the bottom with an upwardlytapering seat 23 forr the pump-retainer.

24 designates a retaining-ring to hold the" w bend readily and to afford a space in which the ring 24 may be accommodated when it is desired to bend the fingers 18 outwardly. Said fingers are provided internally with a downwardly-slanting shoulder 26.

The standing-valve-sleeve 12 is rovided with a taper portion 27 to seat in t e upper end'of the pump-base 11 which is internally tapered as at 28 to seat the same with a tight joint. This taper portion and Lseat 28' may be ground to make a tight fit 'and prevent leakage. The lower portion of the standingvalve-sleeve 12 is of reduced diameter so as to leave 'clearance between such lower portion and the pump-base in order that the taper portion 27 may come to a firm seat in the seat 28. y

29 is an expander and friction-retainer 'for the standing-valve sleeve. The same has a taper portion 30 at its lower end to engage the shoulders 26 of the fingers 18 and to restv thereon when said fingers 18 are compressed inward by the ring 24, thereby to prevent the expander from reaching-a position to expand the fingers 18 so long as the ngers arel com ressed inward by the ring 24. f.

T e pum -seat 14 is provided with an internal shou der 31 to support the ring 24 and allow the fingers to move downward through said ring to position where the ring may be accommodated at the reduced portion 25 of said fingers, thereby to allow the fingers to be forced outward by the taper portion 30 of the expander, whereupon the expander may be forced on downward between said fingers to force the same outward, therebybringing the upper slanting faces 21 of the knobs 19 into engagement with the upwardly-tapering. seat 23 of the pump-seat 14. The fingers are so pro ortioned relative te the pum -base 11 an the ump-seat 14 that when t e pum base is rmly seated on the pump-seat t e upper faces 21 will engage the tapering seat 23 while yet there is an open space between the fingers 18 and the bore of the um -seat, so that the expansive force applied serve to wedge the parts tightly together, thus drawing the pum -base downward positively into its seat an allowing the expander 29 to beheld frictionally between the retainer-fingers so that the standing-valvawillwn 4 y the expander 29 on its downward movement will p i drawn up for that purpose. The expander 29 is tubular to allow a passagev for flow of oil upward to the standing-valve, and is of approximately the same diameter as the bore of the retainer' r above its shoulder 26 when the ngers are in retaining position, so that the expander 29 can only be moved downward 1nto the retainingvposition shown in Fig.` 2 by becoming bent inwardl at the glaces where it engages such s oulders.

aid expander is therefore constructed of ductile material and constitutes bendable meansadapted to wedgeinto thespace bethe reduced portion '25 thereof, the parts may be suspended from the sucker-rod 6, as

shown in Fig. 4, and the pump may be lowered into the tubing until the ring 24 v`engages the shoulders 31 and is thereby held from` further descent while the working-barrel, the pump-base, the retainer, the plunger, the standing-valve and parts connected therewith continue to descend, and until the reduced portion 25 of the retainer 1 is brought inside the ring 24, and thereupon the base becomes seated in the seat member 14 with the upper faces 21 of the retainer-fingers in `position to engage the tapering seat 23 at the ottom of the seat-member 14, in casegthe 'lower ends ofthe fingers are spread apart.

The further lowering of the sucker-rod 6 and the plunger 4 allows the standing-valve and its attached parts to descend until the expander 29 engages the shoulders 26 of the retaining iingers, and then the further descent,

of the plunger brings'the lower end thereof into engagement with the standing-valvecage 32, and pressure is applied to force the expander downwardly so that its tapering end wedges past thegshoulders 26, thereby expanding the fingers to bring the slanting wedge faces 21 against the seat 23, thereby'f drawing the pump-base down'firmly into its seat. The expander will 'thus become crimped between the fingers 18, and will thereby be held friction tight against all ordinary upward force which might tend to unseat thel standing-valve until the sucker-rod 6 is drawn upward'for the pur ose of unseating such valve. In this way t e pump is put into permanent position from w ich it may be drawn and replaced an indenite number of times. Y. c

We elaimf- 1. Pump tubing provided with a pump base seat, a pump base to seat in said seat and provided With a retainer to Aengage the seat and movable means to hold the retainer in such engagement.

2. Pump tubing provided with a pump base seat, a um, base to seat in said seat and provide Wit a retainer to engage the seat and movable means carried by the standing valve to hold the retainer in such engagement.

3. Pump tubing provided with a ump base seat, a ump base to seat in sai seat and providerPWith expansible fingers to engage the seat and movable means to hold the fingers in such engagement.

4. A pump comprising a seat, a pump-base to seat in said seat, retaining means carried by said pump-base and provided with faces to engage the seat, a ring adapted to hold said means out of engaging position, means in said seat to hold said ring to allow the engaging means' to'be moved out of engage' ment With said ring, and means to expand sald engaging means to cause the same to engage said seat.

5. The combination With a pump-base and a Working-barrel connected thereto, of a plunger, means to friotionally retain a standingvalve in said base, and means carried by the standing-valve to engage the Working-'barrel when the standing-valve is drawn upward therethrough.

6; The combination of a seat, a pump-base provided with means to engage the seat, and a standingevalve provided With means to frictionally engage said engaging means and to expand the same into position to engage said seat.

7. In a pump, a pump base, iingers connectedl With said base and provided with knobs and With reduced portions, a ring arranged to hold said fingers retracted, the same being adapted to be moved into said reduced portion, a seat to receive the base and the retaining fingers, said seat being provided With means to hold said ring While the fingers are moved into seat-engaging position, and a standing-valve adapted to seat in said base and provided with means to expand said iingers toengaging position.

8. The combination with a seat, of a pump y base adapted to seat therein and providedV with fingers to engage said seat, of a standing-valve adapted to seat in said base and provided With bendable means' adapted to Wedge into the space between said fingers.

i In testimony whereof, We have hereunto set our hands.

EDWIN A. HARDISON.

ROBERT W. GUNN. W. A. S. THOMPSON. Witnesses:

E. L. Foshan,

Gao. HAY,

JAMES B. ToWNsEND, M. BEULAH ToWNsEND. 

